Diary of a Japanese Resident is a chilling prelude that sets the stage for the horrors to come. Told through the perspective of an ordinary man, Hiroshi Nakamura, the story unfolds in the quiet town of Minakami, where strange events begin to take hold. As an unknown parasite spreads through the water, the seemingly ordinary becomes increasingly nightmarish. Hiroshi's diary entries reveal the creeping dread that takes over his life as he watches his neighbors succumb to something inexplicable and horrifying. The prelude captures the helplessness of facing an invisible threat and serves as an eerie introduction to a world where even the most basic elements of life, like water, become instruments of terror.